李志新,许迪,李益农.畦灌施肥条件下地表水流溶质运移模型研究[J].干旱地区农业研究,2009,27(1):147~151
畦灌施肥条件下地表水流溶质运移模型研究
Development and validation of surface fertigation flow and solute transport model
  
DOI：10.7606/j.issn.1000-7601.2009.01.29
中文关键词:  畦灌施肥  水流  溶质运移  对流-弥散
英文关键词:surface fertigation  flow  solute transport  advection-diffusion
基金项目:国家863计划现代农业技术领域重点项目课题(2006AA100210)
作者单位
李志新 National Center of Efficient Irrigation Engineering and Technology Research China Institute of Water Resourcesand Hydropower Research，Beijing 100044，China 
许迪 National Center of Efficient Irrigation Engineering and Technology Research China Institute of Water Resourcesand Hydropower Research，Beijing 100044，China 
李益农 National Center of Efficient Irrigation Engineering and Technology Research China Institute of Water Resourcesand Hydropower Research，Beijing 100044，China 
摘要点击次数: 1316
全文下载次数: 221
中文摘要:
      以零惯性量模型作为畦灌施肥水流模型,一维的对流扩散方程ADE作为地表溶质运移方程,分别采用隐式格式有限差和特征线法分别进行数值求解,建立了畦灌施肥地表溶质运移模型,并利用田间试验数据对模型进行了试验验证,以期为实现畦灌施肥技术参数优化组合提供合理可行的模型工具。研究结果显示:建立的畦灌施肥地表溶质运移模型是合理可行的,可作为畦灌施肥技术要素优化组合的模拟工具。
英文摘要:
      The surface fertigation solute transport model is developed with zero-inertia model as irrigation flow model and one dimension ADE equation as surface solute transport equation, and solving them separately with the methods of Preissman format finite difference and characteristic curve.It provides an effective model tool to optimize designation of technical parameters combination for fertigation.The research results show that there is good agreement between the measured data and the predicted result by the model, so the suggested model could offer an important tool for optimization of technique factors combination for fertigation;in the fertigation experiment, the research results with both the solutes of ammonia nitrogen and Br-are similar, so the research results in both conditions can be referred to by each other.
查看全文  查看/发表评论  下载PDF阅读器